Rear-projection screen and optical device

A technology of optical devices and screens, applied in optics, projection devices, instruments, etc., can solve problems such as waste of light, inability to adjust the angle of light output, etc., and achieve the best visual quality effect
CN1779559AInactive Publication Date: 2006-05-31PRODISC TECH INC
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
PRODISC TECH INC
Publication Date
2006-05-31
Estimated Expiration
Not applicable · inactive patent

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Abstract

A rear ¿C projection screen and its optical device consists of optical lens and optical device. It is featured as setting optical device opposite to optical lens and forming optical unit by optical unit with the first surface and the second surface as well as by irising layer with multiple light absorption units, setting said the first surface opposite to the second surface and adjoining irising layer to the second surface.
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Description

technical field

[0001] The present invention relates to a rear-projection screen and its optical device, in particular to a rear-projection screen and its optical device which can improve light utilization efficiency. Background technique

[0002] In the past, rear projection televisions (Rear Projection Television) were mostly used for television teaching, as well as simulated real-scene training for pilots of airplanes and automobiles and locomotives. With the improvement of rear projection technology level, rear projection TV is also more and more favored by consumers. Rear-projection TVs feature large screens and clear images. Compared with CRT TVs, rear-projection TVs have the advantages of no radiation and large screen size, and can be directly connected to computers or other devices. Audio-visual equipment, to achieve the greatest entertainment effect. Therefore, the rear-projection television is gradually playing an important role in the entertainment display devic...

Claims

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